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Engine Fails To Reach Normal Operating Temperature

Engine Fails To Reach Normal Operating Temperature

Step Action Yes No
1 Did you review the Symptoms-Engine Cooling Diagnosis information and perform the necessary inspections? Go to Step 2  Go to Symptoms - Engine Cooling 
2 Verify that the engine does not reach normal operating temperature.
Does the engine reach normal operating temperature?
System OK Go to Step 3 
3 Inspect the coolant level.
Is the coolant level below the add mark?
Go to Step 4  Go to Step 5 
4
  1. Add coolant as necessary. Refer to Draining and Filling Cooling System .
  2. Perform a cooling system pressure test.
Is the repair complete?
System OK Go to Step 5 
5 Inspect for a stuck open, missing, or wrong type of thermostat. Refer to Thermostat Diagnosis .
Is the thermostat operating properly?
System OK Go to Step 6 
6 Install the correct replacement thermostat. Refer to Thermostat Replacement .
Is the repair complete?
System OK Go to Step 7 
7 Run the engine in order to verify the repair.
Does the engine fail to reach normal operating temperature?
Go to Step 1  System OK